メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.773819185461 35.0685691642831, 136.773033431171 35.0685280212557, 136.772821000206 35.067949706896, 136.77264094772 35.0673811454514, 136.772465428521 35.0668504163897, 136.772137887626 35.0658207246921, 136.772215604912 35.0657965398633, 136.772242761304 35.0657505008341, 136.772206654348 35.06530903024, 136.774039658245 35.0653789330829, 136.773819185461 35.0685691642831)) ^^http://www.opengis.net/ont/geosparql#wktLiteral